Alert archive / Arizona / Flash Flood Warnings in 2021
Flash Flood Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Jun 29, 2021, 11:56 AM MST for Coconino County, Yavapai County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2021, 11:56 AM MST (18:56 UTC)
- Expired
- Jun 29, 2021, 2:34 PM MST
- In force
- 3 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Coconino County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 91 km from the middle of the area, began a volume at 18:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 6.9 hours before the alert went out and 32 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 225 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1570 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -75 m²/s²
- 0-3 km storm-relative helicity
- -28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted.
484
WGUS55 KFGZ 291856
FFWFGZ
AZC005-025-292145-
/O.NEW.KFGZ.FF.W.0001.210629T1856Z-210629T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
1156 AM MST Tue Jun 29 2021
The National Weather Service in Flagstaff has issued a
* Flash Flood Warning for...
The Rafael Fire scar in...
Coconino County in north central Arizona...
Yavapai County in west central Arizona...
* Until 245 PM MST.
* At 1155 AM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Rafael Fire scar. Between 0.5 and 0.75 inches
of rain have fallen. Flash flooding is ongoing or expected to
begin shortly.
Excessive rainfall over the burn scar will result in debris flow
moving through the Sycamore Creek. The debris flow can consist of
rock, mud, vegetation and other loose materials.
HAZARD...Life-threatening flash flooding. Thunderstorms
producing flash flooding in and around the Rafael Fire
scar.
SOURCE...Doppler radar.
IMPACT...Life-threatening flash flooding of areas in and around
the Rafael Fire scar.
* Some locations that will experience flash flooding include...
White Horse Lake Campground and Raymond Boy Scout Camp.
This includes the following swimming holes...
Sycamore Falls, Lower Sycamore Falls "The Golden Pond", Paradise
Forks and Parsons Spring along Sycamore Creek.
This includes the following highways...
Interstate 40 near mile marker 176.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get to higher ground immediately! Flash flood waters and debris will
inundate recreation trails crossing washes within and downstream of
Sycamore Canyon and Creek, including Parsons and Dogie Trails.
Get out of washes and creeks if you are camping or hiking! Flooding
is occurring or imminent and will inundate area drainages.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3497 11217 3504 11209 3508 11204 3511 11210
3524 11202 3525 11191 3508 11185 3497 11190
3497 11196 3490 11201 3482 11205 3490 11212
3490 11216
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
ET2 follow-up statements
354
WGUS75 KFGZ 291946
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
1246 PM MST Tue Jun 29 2021
AZC005-025-292145-
/O.CON.KFGZ.FF.W.0001.000000T0000Z-210629T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-Yavapai AZ-
1246 PM MST Tue Jun 29 2021
...FLASH FLOOD WARNING FOR THE RAFAEL FIRE SCAR REMAINS IN EFFECT
UNTIL 245 PM MST THIS AFTERNOON FOR COCONINO AND YAVAPAI COUNTIES...
At 1245 PM MST, Doppler radar indicated thunderstorms producing
heavy rain over the Rafael Fire scar earlier today. Between 0.5 and
0.75 inches of rain have fallen. Rainfall intensity has decrease in
the last 20 minutes. However, flash flooding is ongoing or expected
to begin shortly.
Excessive rainfall over the burn scar will result in debris flow
moving through the Sycamore Creek. The debris flow can consist of
rock, mud, vegetation and other loose materials.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding in and around the Rafael Fire scar.
SOURCE...Doppler radar.
IMPACT...Life-threatening flash flooding of areas in and around
the Rafael Fire scar.
Some locations that will experience flash flooding include...
White Horse Lake Campground and Raymond Boy Scout Camp.
This includes the following swimming holes...
Sycamore Falls, Lower Sycamore Falls "The Golden Pond", Paradise
Forks and Parsons Spring along Sycamore Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get to higher ground immediately! Flash flood waters and debris will
inundate recreation trails crossing washes within and downstream of
Sycamore Canyon and Creek, including Parsons and Dogie Trails.
Get out of washes and creeks if you are camping or hiking! Flooding
is occurring or imminent and will inundate area drainages.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3497 11217 3504 11209 3508 11204 3511 11210
3524 11202 3525 11191 3508 11185 3497 11190
3497 11196 3490 11201 3482 11205 3490 11212
3490 11216
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
ET948
WGUS75 KFGZ 292134
FFSFGZ
Flash Flood Statement
National Weather Service Flagstaff AZ
234 PM MST Tue Jun 29 2021
AZC005-025-292144-
/O.CAN.KFGZ.FF.W.0001.000000T0000Z-210629T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Coconino AZ-Yavapai AZ-
234 PM MST Tue Jun 29 2021
...FLASH FLOOD WARNING FOR THE RAFAEL FIRE SCAR IS CANCELLED FOR
COCONINO AND YAVAPAI COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3497 11217 3504 11209 3508 11204 3511 11210
3524 11202 3525 11191 3508 11185 3497 11190
3497 11196 3490 11201 3482 11205 3490 11212
3490 11216
$$
ETThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 11:34 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 26 min |
| Jun 29, 1:05 PM MST | Areal Flood Advisory | FGZ | Coconino, Yavapai | 3 hr |
| Jun 29, 1:58 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 32 min |
| Jun 29, 2:24 PM MST | Flash Flood Warning | FGZ | Gila | 3 hr |
| Jun 29, 3:03 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 42 min |
| Jun 29, 3:39 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 36 min |
| Jun 29, 3:49 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Jun 29, 4:07 PM MST | Special Weather Statement | FGZ | Gila | 23 min |
Nearby
Flash Flood Warnings in Arizona, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.